Fuse.



PATENTED JULY 30, 1907.

R. S. PEIRUB.

FUSE.

[APPLICATION FILED JUNE 12, 1905.

Jew/ml;

"UNITED srnrns PATENT OFFICE.

RALPH S. PEIRCE, OF HINSDALE, ILLINOIS, ASSIGNOR TO P15111011) SPECIALTY COMPANY,

' OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOII FUSE, j

Specification of Letters Patent.

Patented July 30, 1907.

Application filed June 12,1905. Serial lilo. 264,867.

To all whom it may concern:

describing the preferred manner of making the same;

Be it known that I, RALPH S. Pmnen, a citizen of the i although it is to be understood that the invention per- United States, residing at Hinsdale, in the county of Dupage and .State of Illinois, have invented certain new and useful Improvements in Fuses, of which the following is a specification.

My invention relates to fuses for electrical conductors such as are employed in telephone and telegraph wires to prevent damage to the instrument, building, etc, from an accidental passage of an abnormal current thereover, the fuse in such event melting or otherwise breaking and interrupting the conductor. A type of fuse commonly employed for this purpose consists of a tube or cylinder containing a conducting material having a low fusing point, to the ends of which are permancntl y.

new one. The attaching means being frequently the most expensive part of the fuse, a large waste is thus incurred, rendering the use of such fuses uncconomical. Furthermore, such fuses are necessarily of comparatively heavy construction since they are employed as handles for the attachment of the wire clamps thereto.

My invention has for its primary object to simplify and cheapen the construction and cost of fuscs of this character; and this object I accomplish through the provision of a fuse of light weight and simple construction, capable of attachment by means of independent connectors, which, ,in the event of the dcstruction of the fuse, can be saved and reused to connect in the succeeding new fuse.

My invention, in a simple and preferred form, is illustrated in the accompanying drawings, wherein,-

Fi'gure 1 is a central longitudinal sectional view of the body portion or holder of the fuse, in the form of a cylindrical axially apertured strip of wood or similar no conducting substance; Fig. 2 is a similar view showing the end caps applied; Fig. 3 is a similar view illust rating the manner and means of securing the end caps to the body by means of pins riveted on the inside by means of mandrels inserted from each end; Fig. 4 is a similar view showing a still further stage in the nmnufucturo of the fuse wherein the fuse strip and end wires are introduced; Fig. 5 is a similar view showing the completed article; Fig. 6 is a cross-sectional view on the line 6-6 of Fig. 5; and Fig. 7 is a view corresponding to Fig. 5, but illustrating a modified construction of body or holder.

My invention will perhaps be best understood by tains to the article itself and is not limited by the described or any other inann er or mode of manufacture.

In making the article shown in Figs. 1 to (3 inclusive,

I first take a straight cylindrical strip of wood or other suitable non-conducting material, designated by 10, and axially bore the same as shown at 11. I then fit over the ends of the strip metal caps 12 which may be cheaply stamped from sheet tin or other sheetcd metal, as shown in Fig. 2. the head of each cap, by piercing the same, a mandrel 13, the pointed end of the latter entering the tube seinewhat beyond the transverse plane of the inner end of the cap, as shown. I then drive through the cylindrical wall of the cap a number of small pins or tacks 14, the points of which, striking the surface of the mandrel, are turned up thereby and clenched in the wall of the bore, as plainly shown in Fig. 3. The mandrels are then retracted, and a thin narrow strip 15 of a fusible metal, preferably some one of the fusible coinpounds now in common use, is laid in and through the bore, with its ends l5" projecting through the punched openings of the end caps 12. Short flexible copper or other leading-in wires lb are then inserted in the ends of the strip, said wires overlapping and lying in snug Contact with the end portions of the fusible strip 15. These wires are then secured in place, preferably as shown in Fig. 5, by drops of solder l7 introduced around the wire between it and the countersunk opening in the cap, thus permanently uniting the wire, cap and fusible strip. Of course, either or both. of these leading-i1i wires might be the end or ends of the main and branch line wires to be connected within the purview of the invention.

While the axially bored wooden or other tube forms a simple, cheap and easily constructed body for the fuse, yet other forms of body may be used, within my invention, a modification thereof being shown in Fig. 7, wherein l0 designates a wooden or other strip of any suitable cross-section or form, which has formed pleted by the application of the end caps and the introduction of the leading-in wires, the same as in the rincipal form of the device already described.

The fuse hereinabove described is applied by simply clumping, by means of any suitable c nnector or binding device of conducting material, the flexible leadingin wires 1b to the main and branch line wires, or to the interrupted ends of the line wire of any circuit. When the fuse has been blown or destroyed, the operator This done, I introduce through (-5 by iiiQdSillg the ccnneci'cra, am. substitutes a new fuse, securing it in position by the same clamps or connectors rcviously used t0 secure the original fuse, thus avoiding the discarding of the original chimps or connectors and the was'ce and. e:: pause consequent thereon.

While I have shown simple and practicable forms of my invention, yet it is to be understood that such a, showing is iiiurtmtivc merely oi the principle of Lhe inveniion, and might, be varied or modified in respect to details Without departing from the spirit or sacrificing any of the advantages of the invention.

1 ciaii n:

1. An clectric use cam r sing an axially biircfi nun-cou- (h in hudy, cap? r the ufln m snlli body perforated in line with the bum thcreoi, menus the sol, tuna-lion 01 which is to fasten. said can; 0 said body, a fusible strip laid in said how with i ln extended through ihc perrcmoves the fermions of stair caps, leading-in wires also p used i'hz'ough mid. perforations and into the emis of said bore in cui1- fact with said fusible strip, and solder uniiiug each leading-in Wire to the fusible strip and in the corresponding cap. 7

2v An elcciric iusc comprising; an axially lmred 1101141211- d'iciing body, caps secured t'o the ends of said body and perforated in line with the bore ihcreoi illChS Securing said caps to bllid body, suid'tnclzs passing; rnrmigh the caps and the body to ilic bore and being headed -t Liicir outer ends and clenched or bent over xii their inner cuds, (L fusible strip mid in said bore with ts and; extended through the pcrior tions of said capsflcadingdn wires also passed through said perforations and into the ends of said here in coutact with said i'uslblc sirlp, and solder uniting each leading-in wire to the fusible strip [m l to the c0rr0spnnding cap, substantially as described.

RALPH S.

'PVJRCE.

Witnesses:

SAMUEL N. PGND,

L. F. McCain-J. 

